libram is a Typescript library that intends to provide comprehensive support for automating KoLmafia. It is installable via e.g. yarn add libram or npm install libram.
libram can also be used directly from the KoLmafia graphical command line. Start by installing with git checkout https://github.com/loathers/libram release. Then set up an alias of jsl: alias jsl => js { Object.assign(globalThis, require("libram")); }. You can then run e.g. jsl AsdonMartin.fillTo(100) to fill your Asdon Martin, or use any other libram component.